RH, NH
Vishay Dale
Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount
FEATURES
•Molded construction for total environmental
•••••
protection
Complete welded constructionMeets applicable requirements ofMIL-PRF-18546
Available in non-inductive styles (type NH)with Aryton-Perry winding for lowest reactivecomponents
Mounts on chassis to utilize heat-sink effectExcellent stability in operation (< 1 % changein resistance)
Pb-free Available e4RoHS* COMPLIANT STANDARD ELECTRICAL SPECIFICATIONS
GLOBALHISTORICALMIL-PRF-18546 MODELMODELTYPERH005NH005RH010NH010RH025NH025RH050NH050RH100NH100RH250NH250RH-5NH-5RH-10NH-10RH-25NH-25RH-50NH-50RH-100NH-100RH-250NH-250-RE60G-RE60N-RE65G-RE65N-RE70G-RE70N-RE75G-RE75N-RE77G-RE77N-RE80G-RE80NPOWER RATINGP25 °CWDALERESISTANCE RANGEMIL. RANGE SHOWN IN BOLD FACE Ω± 0.25 %± 0.5 %± 1 %, ± 2 %, ± 5 %0.1 - 8.6K0.05 - 8.6K0.02 - 24.5K--0.10 - 3.32K0.1 - 3.27K0.05 - 3.27K0.05 - 12.75K--1.0 - 1.65K0.1 - 16.69K0.05 - 16.69K0.01 - 47.1K--0.10 - 5.62K0.1 - 5.54K0.05 - 5.54K0.05 - 23.5K1.0 - 2.8K--0.1 - 32.99K0.05 - 32.99K0.01 - 95.2K--0.10 - 12.1K0.1 - 12.8K0.05 - 12.8K0.05 - 47.6K--1.0 - 6.04K0.1 - 96K0.05 - 96K0.01 - 273K--0 .10 - 39.2K0.1 - 36.7K0.05 - 36.7K0.05 - 136K--1.0 - 19.6K0.1 - 90K0.05 - 90K0.05 - 90K--0.05 - 29.4K0.1 - 37.5K0.05 - 37.5K0.05 - 37.5K--1.0 - 14.7K0.1 - 116K0.05 - 116K0.05 - 116K--0.10 - 35.7K0.1 - 48.5K0.05 - 48.5K0.05 - 48.5K--1.0 - 17.4KWEIGHT(typical)g33.368.81316.52835350385630690MILITARY± 0.05 %, ± 0.1 %0.5 - 6.75K7.5 (5)5-0.5 - 2.32K7.5 (5)5-0.5 - 12.7K12.5 (10)10-0.5 - 4.45K12.5 (10)10-0.5 - 25.7K2520-0.5 - 9.09K2520-0.5 - 73.4K5030-0.5 - 26K5030-0.5 - 90K10075-0.5 - 37.5K10075-0.5 - 116K250120-0.5 - 48.5K250120-Note
•Figures in parentheses on RH-5 and RH-10 indicate wattage printed on parts, new construction allows these resistors to be rated at higherwattage but will only be printed with the higher wattage on customer request
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: RH0054R125FC02 (preferred part number format)
RH0054R125FC02
SPECIAL(Dash Number)(up to 3 digits)From 1 - 999as applicable
GLOBAL MODELRH005(See “Standard Electrical Specifications”table above foradditional P/N’s)RH-5
RESISTANCE
VALUEL = MilliohmR = DecimalK = Thousand8L000 = 0.008 Ω15R00 = 15 Ω
TOLERANCE
CODEA = 0.05 %B = 0.1 %C = 0.25 %D = 0.5 %F = 1.0 %
PACKAGING
E02 = Lead (Pb)-free, card pack (RH005 - RH050)E01 = Lead (Pb)-free, skin pack (RH100 and RH250)Lead (Pb)-free is not available on RE military type
C02 = Tin/lead, card pack (RH005 - RH050)J01 = Tin/lead, skin pack (RH100 and RH250)
1 %
TOLERANCE CODE
Historical Part Number Example: RH-54.125Ω1 %C02 (will continue to be accepted)
4.125 Ω
RESISTANCE VALUE
C02PACKAGING
Document Number: 30201
Revision: 11-Jul-07
HISTORICAL MODEL
* Pb containing terminations are not RoHS compliant, exemptions may applywww.vishay.com154
For technical questions, contact: ww2bresistors@vishay.com元器件交易网www.cecb2b.com
RH, NH
Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount
DIMENSIONS in inches [millimeters]
RH-5, -10, -25, -50NH-5, -10, -25, -50DCAMNBPKLHJFEGVishay Dale
MODELDIMENSIONS in inches [millimeters]
A
B
CD
E
F
G
H
J
K
L
M
N
P
RH-5NH-50.4440.4900.6001.1250.3340.6460.3200.0650.1330.0780.0930.0780.0500.266± 0.005± 0.005± 0.030± 0.062± 0.015± 0.015± 0.015± 0.010± 0.010± 0.010± 0.005± 0.015± 0.005± 0.062
[2.36[1.98[1.27[6.76[11.28[12.45[15.24[28.58[8.48[16.41[8.13[1.65[3.38[1.98
± 0.127]± 0.127]± 0.787]± 1.57]± 0.381]± 0.381]± 0.381]± 0.254]± 0.254]± 0.254]± 0.127]± 0.381]± 0.127]± 1.57]0.0930.0940.1020.0850.3120.5620.6250.7501.3750.4200.8000.3900.0750.165
± 0.005± 0.005± 0.031± 0.062± 0.015± 0.015± 0.015± 0.010± 0.010± 0.010± 0.005± 0.015± 0.005± 0.062
[9.91[1.91[4.19[2.36[2.39[2.59[2.16[7.92[14.27[15.88[19.05[34.93[10.67[20.32
± 0.127]± 0.127]± 0.787]± 1.57]± 0.381]± 0.381]± 0.381]± 0.254]± 0.254]± 0.254]± 0.127]± 0.381]± 0.127]± 1.57]0.1720.1250.1150.0850.4380.7190.7811.0621.9380.5501.0800.5460.0750.231
± 0.005± 0.005± 0.031± 0.062± 0.015± 0.015± 0.015± 0.010± 0.010± 0.010± 0.005± 0.015± 0.005± 0.062[18.26[19.84[26.97[49.23[13.97[27.43[13.87[1.91[5.87[4.37[3.18[2.92[2.16[11.13± 0.127]± 0.127]± 0.787]± 1.57]± 0.381]± 0.381]± 0.381]± 0.254]± 0.254]± 0.254]± 0.127]± 0.381]± 0.127]± 1.57]0.1960.1250.1070.0850.4381.5620.8441.9682.7810.6301.1400.6100.0880.260
± 0.005± 0.005± 0.031± 0.062± 0.015± 0.015± 0.015± 0.010± 0.010± 0.010± 0.005± 0.015± 0.005± 0.062
[2.24[6.60[4.98[3.18[2.72[2.16[11.13[39.67[21.44[49.99[70.64[16.00[28.96[15.49
± 0.127]± 0.127]± 0.787]± 1.57]± 0.381]± 0.381]± 0.381]± 0.254]± 0.254]± 0.254]± 0.127]± 0.381]± 0.127]± 1.57]
RH-10NH-10RH-25NH-25RH-50NH-50DIMENSIONS in inches [millimeters]
RH-100, NH-100 Nickel platedbrass nutstainless steel stud3.50 ± 0.031[88.90 ± 0.787]0.188 ± 0.010[4.78 ± 0.254]Dia. typ.1.125 ± 0.031[28.58 ± 0.787]2.25 ± 0.010[57.15 ± 0.254]0.375 ± 0.031[9.52 ± 0.787]2.75 ± 0.010[69.85 ± 0.254]5.478 ± 0.093[139.14 ± 2.36]0.188 ± 0.010[4.78 ± 0.254]Dia. typ.4.50 ± 0.031[114.30 ± 0.787]0.989 ± 0.031[25.12 ± 0.787]1.75 ± 0.031[44.45 ± 0.787]1.812 ± 0.031[46.02 ± 0.787]2.812 ± 0.031[71.42 ± 0.787]12 - 24UNC-2AThd. typ.0.188 ± 0.0310.770 ± 0.015[4.78 ± 0.787][19.56 ± 0.381]typ.RH-250, NH-250 Nickel platedbrass nutstainless steel stud1/4 - 20UNC-2A thd. typ.2.125 ± 0.031[53.98 ± 0.787]3.0 ± 0.031[76.20 ± 0.787]1.25 ± 0.062[31.75 ± 1.575]2.50 ± 0.010[63.50 ± 0.254]0.875 ± 0.010[22.23 ± 0.254]3.0 ± 0.010[76.20 ± 0.254]3.875 ± 0.010[98.42 ± 0.254]7.0 ± 0.093 [177.80 ± 2.36]0.250 ± 0.031[6.35 ± 0.787]typ.55.58 ± 0.787[2.188 ± 0.031]0.312 ± 0.031[7.92 ± 0.787]1.25 ± 0.062[31.75 ± 1.575]0.955 ± 0.015[24.26 ± 0.381]
Document Number: 30201Revision: 11-Jul-07
For technical questions, contact: ww2bresistors@vishay.comwww.vishay.com
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RH, NH
Vishay Dale
Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature CoefficientDielectric Withstanding VoltageShort Time OverloadMaximum Working VoltageInsulation ResistanceTerminal StrengthSolderability
Operating Temperature Range
UNITppm/°CVAC-VΩlb-°C
RH RESISTOR CHARACTERISTICS
± 100 for 0.1 Ω to 0.99 Ω, ± 50 for 1 Ω to 9.9 Ω, ± 20 for 10 Ω and above1000 for RH/5, RH-10 and RH/25, 2000 for RH/50, 4500 for RH/100 and RH/250
5 × rated power for 5 s
(P x R)1/2
10 000 MΩ minimum dry, 1000 MΩ minimum after moisture test5 minimum for RH-5 and RH-10, 10 minimum for all othersMIL-PRF-18546 type - meets requirements of ANSI J-STD-002
- 55 to + 250
POWER RATING
Vishay RH resistor wattage ratings are based on mounting to the following heat sink:
RH-5 and RH-10:4\" x 6\" x 2\" x 0.040\" thick aluminum chassis (129 sq. in. surface area)RH-25:5\" x 7\" x 2\" x 0.040\" thick aluminum chassis (167 sq. in. surface area)RH-50:12\" x 12\" x 0.059\" thick aluminum panel (291 sq. in. surface area)RH-100 and RH-250:12\" x 12\" x 0.125\" thick aluminum panel (294 sq. in. surface area)
AMBIENT TEMPERATURE DERATING
Derating is required for ambient temperatures above 25 °C, see the following graph.
Curves A, B, C apply to operation of unmounted resistors. Curve D applies to all types when mounted to specified heat sink.A = RH-5 and RH-10 size resistor, unmountedB = RH-25 size resistor, unmounted
C = RH-50, RH-100 and RH-250 size resistor, unmountedD = All types mounted to recommended aluminum heat sink
RATED POWER IN %120100806040200- 55- 50ABCD02550150250DeratingRATED POWER IN %AMBIENT TEMPERATURE IN °CREDUCED HEAT SINK DERATING:
Derating is also required when recommended heat sinkarea is reduced.
A = RH-5 and RH-10 size resistorB = RH-25 size resistor
C = RH-50, RH-100 and RH-250 size resistor
1009080706050403020100ABC020406080100Heat Sink Deratingwww.vishay.com156
For technical questions, contact: ww2bresistors@vishay.com % OF RECOMMENDED HEAT SINK AREADocument Number: 30201
Revision: 11-Jul-07
元器件交易网www.cecb2b.com
RH, NH
Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy,depending on resistance value
Core: Ceramic, steatite or alumina, depending on physicalsize
Encapsulant: Silicone molded constructionHousing: Aluminum with hard anodic coatingEnd Caps: Stainless steel
Standard Terminals: For RH-5 through RH-50 size terminalfinish - Tin/lead is 60/40 Sn/Pb w/Nickel underplate andLead (Pb)-free is Ni/Pd/Au, finish is on copper clad steel coreterminal. For RH-100 and RH-250 terminals are threadedstainless steel.
Note:
Military (RE) parts are only available with tin/lead finish
Vishay Dale
SPECIAL MODIFICATIONS
A number of special modifications to the aluminum housedresistor style are available upon request. Specialmodifications include:
•Terminal configurations and materials•Resistance values and tolerances
•Low resistance temperature coefficient (RTC)•Housing configuration•Threaded mounting holes
•Preconditioning and other additional testing
APPLICABLE MIL SPECIFICATIONS
MIL-PRF-18546 is the military specification coveringaluminum housed, chassis mount, power resistors. VISHAYRH and NH resistors are listed as qualified on theMIL-PRF-18546 QPL.
Part Marking: DALE, model, wattage, value, tolerance, datecode
NH NON-INDUCTIVE
Models of equivalent physical and electrical specificationsare available with non-inductive (Aryton-Perry) winding.They are identified by substituting the letter N for R in themodel number (NH-5, for example).
PERFORMANCE
TEST
Thermal ShockShort Time OverloadDielectric Withstanding VoltageTemperatureMoisture ResistanceShock, Specified PulseVibration, High FrequencyLoad LifeTerminal Strength
CONDITIONS OF TEST
Rated power applied until thermally stable, then a minimum of 15 min at - 55 °C5 x rated power for 5 s
1000 Vrms for RH-5, RH-10 and RH-25; 2000 Vrms for RH-504500 Vrms for RH-100 and RH-250; duration 1 min250 °C for 2 h
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100 g's for 6 ms, 10 shocks
Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 h each1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
30 s, 5 pound pull test for RH-5 and RH-10, 10 pound pull test for other sizes,torque test - 24 pound inch for RH-100 and 32 pound inch for RH-250
TEST LIMITS± (0.5 % + 0.05 Ω) ΔR± (0.5 % + 0.05 Ω) ΔR± (0.2 % + 0.05 Ω) ΔR± (0.5 % + 0.05 Ω) ΔR± (1.0 % + 0.05 Ω) ΔR± (0.2 % + 0.05 Ω) ΔR± (0.2 % + 0.05 Ω) ΔR± (1.0 % + 0.05 Ω) ΔR± (0.2 % + 0.05 Ω) ΔR
Document Number: 30201Revision: 11-Jul-07
For technical questions, contact: ww2bresistors@vishay.comwww.vishay.com
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Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained hereinor in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of anyinformation provided herein to the maximum extent permitted by law. The product specifications do not expand orotherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressedtherein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by thisdocument or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unlessotherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in suchapplications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resultingfrom such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regardingproducts designed for such applications.
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Document Number: 91000Revision: 18-Jul-08
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